<html><body><h1>Window 对象</h1><h2>setInterval() 和 clearInterval() 方法</h2><p>在此例中,setInterval() 方法每 500 毫秒执行一次 setColor() 函数,在两种背景颜色之间切换。</p><button onclick="stopColor()">停止切换</button><script>myInterval = setInterval(setColor, 500); function setColor() { let x = document.body; x.style.backgroundColor = x.style.backgroundColor == "yellow" ? "pink" : "yellow";}function stopColor() { clearInterval(myInterval);}</script></body></html>